The UK's

toughest triathlonSWIM 5km–BIKE 1,000km -RUN 50km

22 June – 28 June 2025

Swim, cycle and run over 1,055 km from Loch Ness to London and tackle this seven-legged beast!


the event

Spanning 7 days the Monster Triathlon is the UK’s ultimate multi-sport challenge

It starts with a 5km swim in Loch Ness, before 5 stunning days on the bike and finishes with an ultra-marathon along the Thames. For those unable to tackle the beast in one go we are offering Swim, Cycle and Run only packages this year. You’ll pass lakes, climb mountains, ride past fields, fly through villages, cross rivers and conquer hills. As well as being an epic challenge The Monster Triathlon also highlights the beauty and diversity of the UK.

Find out more

GOld Charity PartnerSabre EDUCATION

This fantastic small charity work with kindergarten children in Ghana and help give them a bright start to their education. Register as a Sabre fundraiser and receive half price entry if you pledge to raise £2,000 sponsorship.

So what are you waiting for... your next big challenge starts here!

Find out more
Kindergarten children in Ghana